4DWXFour Dimensional Weather System
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The forecasting products employed included DPG's high-resolution Weather Research and Forecasting (WRF) Model-based advanced Four-Dimensional (4DWX) weather modeling system developed by NCAR (Liu et al.
Ongoing modeling activities continue to highlight challenges faced by (Army) forecasters at DPG, whose tools include the GMAST observational network and the NCAR 4DWX. The latter employs data assimilation, cycling eight times a day at 1.1-km resolution, and it combines the WRF predictive core with current atmospheric conditions to make detailed predictions for the next several days.
WRF 4DWX could predict the overall flow patterns, including the flow distortion by GM, but as expected finer features such as vortex structures and in-canyon flows could not be captured (Fig.